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modules/network/include/metrics/HistoryBufferExporter.hpp

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+#pragma once
+
+#include "metrics/HistoryBuffer.hpp"
+
+#include <filesystem>
+#include <fstream>
+
+
+
+/**
+ * Exports HistoryBuffer into a CSV.
+ */
+template<typename TKey, typename TValue>
+class HistoryBufferExporter {
+    std::fstream m_output_file;
+
+public:
+    HistoryBufferExporter(std::filesystem::path output_path) {
+        m_output_file = std::fstream(output_path, std::ios::out);
+        if(!m_output_file.is_open()) {
+            throw std::runtime_error("Failed to open output file");
+        }
+    }
+
+    /**
+     * Writes the history buffer if full and clears it.
+     * @return bool: true if buffer was full and exported. False otherwise.
+     */
+    bool write(const uint32_t entity, TKey key, TValue value) {
+        m_output_file << entity << "," << key << "," << value.x << "," << value.y << "," << value.z << "\n";
+        return true;
+    }
+};